SH7750_08 Datasheet, PDF (888/1162 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

Section 18 I/O Ports
18.1.2 Block Diagrams
Figure 18.1 shows a block diagram of the 16-bit general-purpose I/O port.
PBnPUP
PORTEN
Pull-up resistor
Interrupt
controller
Internal bus
0
Dn output data
DQ
1
PDTRW C
BCK
0
DnDIR
1
PBnIO
PTIRENn
0
Data input strobe
1
Q
C
D
Dn input data
PORTEN
PBnPuP
DnDIR
PBnIO
PTIRENn
0: Port not available
0: Pull-up
0: Input
0: Input
0: Interrupt input disabled
1: Port available
1: Pull-up off
1: Output
1: Output
1: Interrupt input enabled
Figure 18.1 16-Bit Port
Port 15 (input/
output)/D47
to
Port 0 (input/
output)/D32
BCK
Rev.7.00 Oct. 10, 2008 Page 804 of 1074
REJ09B0366-0700